14-0000

Slee

104-10110-10621

| 2025 RELEASE UNDER THE PRESIDENT JOHN F. KENNEDY ASSASSINATION RECORDS ACT OF 1992 |

,

@ SECRET rd]

DAVID L, CHRIST

Chief of TSD/Audio Operations Branch witting of the following:

AL audio operations world-wide since December 1957 to present
date. ,

Complete knowledge of alt RED aspects of audio equipment
research.

Had knowledge of certain Staff D and FI equipment and operations.

Gomplete knowledge of all audio assets in production and stocked
for use overseas.

Clearances through Top Secret, Special Intelligence clearance,
and "Q"' clearance.

World-wide knowledge cf the location of alt our audio technicians.

Having previously deen with the Applied Physics Branch of TSD,
he was also aware of many of our other R&D activities.

As Branch Chief in TSD, he hae full information on alk personnel
in TSD and g eneral knowledge of the overall activities, inckuding
the research programs. . .

He has been to ‘Isolation many timee,

SECRET

